WO2006125949A1 - Ameliorations sur ou concernant des fauteuils monte-escalier - Google Patents
Ameliorations sur ou concernant des fauteuils monte-escalier Download PDFInfo
- Publication number
- WO2006125949A1 WO2006125949A1 PCT/GB2006/001702 GB2006001702W WO2006125949A1 WO 2006125949 A1 WO2006125949 A1 WO 2006125949A1 GB 2006001702 W GB2006001702 W GB 2006001702W WO 2006125949 A1 WO2006125949 A1 WO 2006125949A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- stairlift
- rail
- drive
- carriage
- transmission section
- Prior art date
Links
- 230000005540 biological transmission Effects 0.000 claims abstract description 28
- 230000001419 dependent effect Effects 0.000 claims description 2
- 238000005461 lubrication Methods 0.000 abstract description 4
- 239000002184 metal Substances 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 239000004033 plastic Substances 0.000 description 4
- 229920003023 plastic Polymers 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 230000003993 interaction Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000005728 strengthening Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 239000004519 grease Substances 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 239000002991 molded plastic Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B9/00—Kinds or types of lifts in, or associated with, buildings or other structures
- B66B9/06—Kinds or types of lifts in, or associated with, buildings or other structures inclined, e.g. serving blast furnaces
- B66B9/08—Kinds or types of lifts in, or associated with, buildings or other structures inclined, e.g. serving blast furnaces associated with stairways, e.g. for transporting disabled persons
- B66B9/0807—Driving mechanisms
- B66B9/0815—Rack and pinion, friction rollers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B9/00—Kinds or types of lifts in, or associated with, buildings or other structures
- B66B9/06—Kinds or types of lifts in, or associated with, buildings or other structures inclined, e.g. serving blast furnaces
- B66B9/08—Kinds or types of lifts in, or associated with, buildings or other structures inclined, e.g. serving blast furnaces associated with stairways, e.g. for transporting disabled persons
- B66B9/0807—Driving mechanisms
Definitions
- This invention relates to stairlifts
- Stairlifts including those travelling in a single direction at a single angle of inclination (straight-line stairlifts), typically comprise a carriage mounted on a stairlift rail for movement along the rail.
- the carriage includes a drive motor and gearbox and includes some form of drive mechanism, such as a rack and pinion, which contacts the rail to effect movement of the carriage along the rail. Whilst this arrangement is well proven, there is an increasing pressure to reduce the cost of such products whilst not compromising product safety. There is also pressure to provide a drive system which does not require lubrication in the form of grease, since grease may lead to soiling of clothing or other material coming into contact with the rail.
- the invention provides a stairlift including:
- a stairlift rail having a drive surface extending along said rail
- a drive mechanism within said carriage engageable with said drive surface on the rail to displace said carriage along said rail
- said stairlift being characterised in that said drive mechanism includes a transmission section moveable within said carriage in a direction substantially parallel to said drive surface, and means to maintain said transmission section in engagement with said drive surface such that, upon movement of said transmission section with respect to said carriage, said carriage is driven with respect to said rail.
- said transmission section is embodied in a belt.
- said belt comprises an endless belt supported on a pair of spaced wheels.
- each of said spaced wheels is driven.
- said drive surface and said transmission section include inter- engaging drive elements.
- said drive elements are defined by spaced teeth on said transmission member and spaced recesses on said drive surface configured to receive said teeth.
- said drive mechanism is constructed and arranged such that, at any one time, a plurality of said teeth are engaged with recesses on said drive surface.
- said drive mechanism further includes a follower operable to maintain said teeth in engagement with said recesses.
- each of said wheels on which said endless belt is supported includes at least one side plate, said at least one side plate including projections shaped and positioned to engage with said recesses on said rail in the event of failure of said flexible transmission member.
- said recesses are defined by apertures formed in said rail.
- said transmission section is constructed and arranged to frictionally engage said drive surface.
- said drive mechanism includes biasing means to bias said transmission section into frictional engagement with said drive surface.
- said drive mechanism is constructed and arranged so that, at any one time, a longitudinal part of said transmission section is in frictional contact with said drive surface.
- Figure 1 shows an isometric view, from the front, of a first embodiment of stairlift carriage and rail according to the invention
- Figure 2 shows in an isometric view, from the rear, of that which is shown in Figure 1;
- Figure 3 shows an end elevation of the stairlift components shown in Figures 1 & 2;
- Figure 4 shows a rear elevation of the carriage forming part of the stairlift shown in Figures 1 to 3, removed from the stairlift rail;
- Figure 5 shows an isometric view, from the front, if a second embodiment of stairlift carriage according to the invention
- Figure 6 shows a rear elevation of the carriage shown in Figure 5, removed from the stairlift rail
- Figure 7 shows a view from the same direction as Figure 6 but of an alternative embodiment of carriage
- Figure 8 shows a view from the same direction as Figure 6 but of a further alternative embodiment of carriage.
- a stairlift assembly 10 is provided, the assembly 10 including a stairlift rail 11 and a carriage 12 mounted for movement along the rail. Included within the carriage 12 is a novel drive mechanism which will be described in greater detail below.
- the rail 11 is formed from a combination of folded sheet metal sections and comprises a first section 14 and a second section 16, the two sections being fixed together by, for example, rivets 17.
- the first section 14 includes an upright centre web 18, an upper flange 20, and a lower flange 22.
- the flanges 20 and 22 are substantially parallel and the upper flange 20 has strengthening rib 21 extending along the outer edge thereof whilst the lower flange 22 has an angled strengthening rib 23 extending along the outer edge thereof.
- the upper flange 20 has included therein, or itself defines, a drive surface.
- the drive surface has formed therein, a series of spaced recesses, preferably in the form of evenly-spaced slotted apertures 24.
- These apertures may be laser-cut into the flange 20 although other methods of forming the slots will be known to those skilled in the art.
- the edges thereof may be smoothed off and/or tailored more closely to the profile of the driving transmission member by, for example, applying a punch to each aperture.
- the second section 16 of the rail includes a centre web 26, and a bottom flange 28 having a angled strengthening rib 29 extending along the outer edge thereof.
- the rail 11 as described above can be readily formed using conventional sheet-metal forming techniques which do not require expensive tooling investment.
- the rail need not be formed as two components, or formed from sheet metal, as described above.
- the rail could, for example, be extruded and the apertures 24 post- formed by punching or • other suitable technique.
- the carriage 12 has a central chassis member 30 which may be cast, or machined from a solid block of metal.
- the chassis member might also be formed from other materials including injection moulded plastics.
- a number of rollers are provided to support the chassis on the rail 11 and, in the form shown, include two spaced, vertical, support rollers 32a and 32b which are in rolling contact with the flange 22 of the rail; and a plurality of horizontal rollers arranged to resist rotation of the carriage about the rail.
- the horizontal rollers include a spaced pair 34a and 34b which bear against rib 21, and a spaced pair 36a and 36b which bear against the upper margin of centre web 18.
- the rollers 34 are mounted at opposite edges of the main chassis 30 whilst the rollers 36 are mounted on brackets 38 extending from, but fixed to, the rear surface of the chassis 30.
- the horizontal roller set is completed by central bottom roller 40 which is positioned to bear against the rib 23 of first rail section 14.
- a characteristic feature of the stairlift according to the invention is the drive mechanism included within the carriage 12 to displace the carriage 12 along the rail 11.
- This drive mechanism includes a transmission section which, when the carriage is mounted on the rail, is parallel to the drive surface 20 on the rail, and is held in contact with the drive surface 20.
- the transmission section is preferably flexible in form and, in this embodiment, is provided with drive elements arranged to engage with the apertures 24 on the rail in such a way that displacement of the transmission section with respect to the carriage, effects displacement of the carriage along the rail.
- the flexible transmission section is advantageously incorporated in an endless belt 44 having drive elements in the form of teeth 46 and 48 extending from the inner and outer faces, respectively, thereof.
- the teeth 48 extending from the outer surface of the belt 44 are configured and arranged to engage with the apertures 24 in the rail.
- the teeth 46 are selected to engage with, or determine, the toothed peripheries (not shown) of spaced drive wheels 50a and 50b on which the belt 44 is mounted and supported.
- the belt 44 is preferably a readily available, off-the-shelf, timing belt. These are typically rubber/plastics/synthetic/fabric composite items manufactured by Gates amongst others. A particular feature of these belts is that they operate without the need for any lubrication. It will be appreciated that the upper span 52 of the mounted belt engages the under-surface of the flange 20, and thus the teeth 48 engage with apertures 24 from below. In this way, the moving belt is kept out of contact with the exterior of the stairlift assembly. The span 52 of the belt is vertically supported by, and maintained in contact with flange 20, by a static rubbing block or follower 54 which is positioned within the loop defined by the mounted belt. The follower ensures that the section of belt which, at any time defines the upper span 52, cannot sag and allow the teeth 48 thereon to become disengaged from the slots 24.
- a particular feature of the drive mechanism herein described is that a plurality of the teeth 48 are engaged in slots 24 at any given time.
- the number of teeth 46 engaged in slots 24 is determined by the length of the upper span 52 of the belt.
- 23 teeth are fully engaged in slots 24, each tooth 48 having a width of about 5mm.
- the fact that more than one tooth 48 is engaged with the rail reduces the loading on the individual teeth and thus reduces the likelihood of tooth failure.
- the relatively low loading on each tooth also enables the use of non-metallic materials.
- a slackness monitor 56 is preferably provided which acts against the bottom span 58 of the belt and determines if the span 58 becomes slack due to, for example, breakage of the belt 44. In the event the monitor 56 senses slackness of the belt 44, an internal switch is broken cutting power to the carriage drive.
- a toothed flexible belt as described above is the preferred form of flexible transmission member
- other drives are possible without departing from the scope of the invention.
- a chain based drive system could be provided having teeth or the like, projecting from the individual chain links, to engage in apertures 24 in the rail.
- the belt or chain need not engage with the slots or apertures 24, as shown.
- a downwardly facing arrangement more in the nature of a rack, could be provided - either formed integrally with flange 20, or as a separate component mounted thereon. That is to say, downwardly facing teeth or like projections could engage with the teeth 48 of the drive belt.
- the rack could be machined from metal, moulded from plastics, or punched from sheet material in the manner described in greater detail in our co-pending British Patent Application No. 0523027.1.
- Toothed wheels 50a and 50b are preferably, but not necessarily, both driven. To this end, the wheels are mounted on the output shafts of two motor/gearbox units 60a and 60b.
- the units 60a and 60b are mounted on the front face of the chassis 30 but so that the output shafts thereof pass through the chassis.
- the units 60a and 60b are preferably selected so as to be self-sustaining. That is to say, the units will not free-wheel whilst not energised and subjected to a displacing force.
- the self-sustaining feature overcomes the necessity to provide separate braking for the carriage.
- Batteries 62a and 62b are clamped to the rear of the chassis 30 to provide power for the motor/gearbox units and for the other electrical based functions of the stairlift, the latter being under the control of an electronic control unit (ECU)-based control system 64 provided on the upper edge of the chassis 30.
- ECU electronice control unit
- each of the drive wheels 50a and 50b may be provided with side plates 51 which not only serve to maintain the belt 44 from slipping sideways off the wheels 50, but may also be provided with peripheral projections or teeth 61, some of which are shown on wheel 50a.
- the teeth 61 are shaped and spaced to protrude within apertures 24 but not, normally, to engage the edges of the apertures and provide a drive function.
- power is cut to the motor/gearbox units 60 and the teeth 61 may then engage the edges of the apertures 24 and lock the carriage in position.
- a boss 66 is mounted to project from the front surface of the chassis 30 to provide a mounting point for a chair interface.
- a second embodiment 110 of stairlift is shown which, in most respects, is identical to the stairlift 10 described above.
- the rail 111 of this embodiment is identical in all respects with the rail 11 described above, but for the fact that the drive surface 120 is not necessarily formed with the recesses or apertures of drive surface 20 of the rail 11.
- the structure of carriage 112, and the roller arrangement for supporting the carriage 112 on the rail 111 is identical to that described above.
- the core of the drive arrangement of this second embodiment is an endless belt 144.
- the belt 144 does not include teeth 48 on the outer surface thereof.
- the outer surface 148 of the belt 144 is plane and arranged to frictionally interact with the drive surface 120.
- the inner surface of the belt 144 is provided with teeth 146 to engage the surfaces of toothed drive wheels 150a and 150b. As shown, these drive wheels are both driven, by motor/gearbox units 160a and 160b, though one only may be driven.
- biasing means is preferably provided to maintain the full length of the span 152 in contact with the drive surface 120 of the rail.
- this biasing means comprises a plurality of rollers 170 mounted on a support bracket 172.
- the support bracket 172 is, in turn, biased toward the underside of the span 152 by springs 174.
- the peripheries of the rollers 170 may be slotted to received the teeth 146 on the inner surface of the belt 144.
- two supplementary rollers 180 bear against the outer part 121 of that section of the rail whose underside defines drive surface 120. In so doing, the rollers 180 maintain the drive belt 144 in contact with the drive surface 120.
- the rollers 180 are biased towards the rail by compression springs 182 or the like. This, of course, has the effect of drawing the drive wheels 50 and thus the drive belt 144, up towards the drive surface 120. The degree of interaction can be varied by changing the strength of springs 182.
- FIG. 8 A further alternative is shown in Figure 8.
- supplementary rollers 186 are provided, the rollers 186 being positioned to bear against surface 121 of the rail.
- the rollers are rotatably mounted on rockers 188 and the rockers, themselves are pivotally mounted to the chassis at 190.
- the upper ends of the rockers are interconnected by a biasing link 192 which can vary the spacing between the rockers and thus adjust the bias of the rollers 186 against the rail. It will be appreciated that this affects the degree to which the drive belt 144 is drawn up into contact with the drive surface 120.
- the biasing link 192 may comprise a manual adjustment with or without additional spring bias.
- the link 192 may be configured to provide bias which is dependent on passenger weight, substantially as shown in our published International Patent Application No. WO 02/05617.
- a slackness monitor 156 may be provided to monitor the tension in the belt 144 and activate the necessary safety systems to halt the carriage in the event that this tension falls below a pre-determined minimum level.
- the assembly has a particularly simple form of carriage which is compact, provides low seat height, and creates greater scope for chair and interface design.
- chassis being extremely simple and robust in form, lends itself to simplified manufacturing techniques including plastics injection moulding.
- the belt-based drive system is highly efficient and the fact that such a length thereof is in contact with the rail means than, whether interacting teeth/recesses or a friction drive is chosen, the loading on the drive elements is low.
- the rubber/plastics based belt also obviates the need for additional lubrication to be added to the drive system.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Transportation (AREA)
- Automation & Control Theory (AREA)
- Structural Engineering (AREA)
- Escalators And Moving Walkways (AREA)
Abstract
L’invention concerne un fauteuil monte-escalier dans lequel l’entraînement comprend une section de transmission longitudinale déplaçable ou un élément d’entraînement qui est maintenu en contact avec une longueur du rail du fauteuil monte-escalier. La section de transmission est de préférence comprise dans une courroie ou une chaîne en boucle et l’embrayage avec le rail du fauteuil monte-escalier peut être par embrayage positif ou par friction. Cette forme d’entraînement évite le point de chargement haut des systèmes d’entraînement des fauteuils monte-escalier conventionnels et rend inutile la lubrification.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB0510455.9 | 2005-05-21 | ||
GBGB0510455.9A GB0510455D0 (en) | 2005-05-21 | 2005-05-21 | Improvements in or relating to stairlifts |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2006125949A1 true WO2006125949A1 (fr) | 2006-11-30 |
Family
ID=34834469
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/GB2006/001702 WO2006125949A1 (fr) | 2005-05-21 | 2006-05-09 | Ameliorations sur ou concernant des fauteuils monte-escalier |
Country Status (2)
Country | Link |
---|---|
GB (2) | GB0510455D0 (fr) |
WO (1) | WO2006125949A1 (fr) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3160888B1 (fr) | 2014-06-27 | 2018-08-15 | Handicare Stairlifts B.V. | Monte-escalier |
CN108609550A (zh) * | 2018-07-19 | 2018-10-02 | 温州市人民医院 | 一种轮椅用输送滑轨 |
CN110733958A (zh) * | 2019-09-18 | 2020-01-31 | 浙江威特电梯有限公司 | 一种大吨位载货电梯 |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2585657B (en) * | 2019-07-09 | 2023-06-07 | Stannah Stairlifts Ltd | Improvements in or relating to stairlifts |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH06278665A (ja) * | 1993-03-29 | 1994-10-04 | Sanwa Sharyo Kk | 階段昇降機用ガイド装置 |
US5964159A (en) * | 1991-02-14 | 1999-10-12 | Hein; Wilfried | Inclined or vertical lift |
JP2000026047A (ja) * | 1998-07-10 | 2000-01-25 | Zenji Tsuchikawa | 昇降装置 |
EP0982259A2 (fr) * | 1998-08-24 | 2000-03-01 | Daido-Kogyo Kabushiki Kaisha | Dispositif autopropulsé pour franchir les escaliers |
JP2000344444A (ja) * | 1999-05-31 | 2000-12-12 | Somic Ishikawa:Kk | 階段昇降装置 |
JP2003128364A (ja) * | 2001-10-23 | 2003-05-08 | Syntex Kk | 階段用椅子昇降機におけるレールカバー装置 |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH07170720A (ja) * | 1993-12-10 | 1995-07-04 | Hitachi Metals Ltd | 車両走行用レール |
GB2421018B (en) * | 2004-10-09 | 2008-02-13 | Stannah Stairlifts Ltd | Improvements in or relating to stairlifts |
-
2005
- 2005-05-21 GB GBGB0510455.9A patent/GB0510455D0/en not_active Ceased
-
2006
- 2006-05-05 GB GB0608850A patent/GB2426239B/en not_active Expired - Fee Related
- 2006-05-09 WO PCT/GB2006/001702 patent/WO2006125949A1/fr active Application Filing
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5964159A (en) * | 1991-02-14 | 1999-10-12 | Hein; Wilfried | Inclined or vertical lift |
JPH06278665A (ja) * | 1993-03-29 | 1994-10-04 | Sanwa Sharyo Kk | 階段昇降機用ガイド装置 |
JP2000026047A (ja) * | 1998-07-10 | 2000-01-25 | Zenji Tsuchikawa | 昇降装置 |
EP0982259A2 (fr) * | 1998-08-24 | 2000-03-01 | Daido-Kogyo Kabushiki Kaisha | Dispositif autopropulsé pour franchir les escaliers |
JP2000344444A (ja) * | 1999-05-31 | 2000-12-12 | Somic Ishikawa:Kk | 階段昇降装置 |
JP2003128364A (ja) * | 2001-10-23 | 2003-05-08 | Syntex Kk | 階段用椅子昇降機におけるレールカバー装置 |
Non-Patent Citations (4)
Title |
---|
PATENT ABSTRACTS OF JAPAN vol. 1995, no. 01 28 February 1995 (1995-02-28) * |
PATENT ABSTRACTS OF JAPAN vol. 2000, no. 04 31 August 2000 (2000-08-31) * |
PATENT ABSTRACTS OF JAPAN vol. 2000, no. 15 6 April 2001 (2001-04-06) * |
PATENT ABSTRACTS OF JAPAN vol. 2003, no. 09 3 September 2003 (2003-09-03) * |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3160888B1 (fr) | 2014-06-27 | 2018-08-15 | Handicare Stairlifts B.V. | Monte-escalier |
CN108609550A (zh) * | 2018-07-19 | 2018-10-02 | 温州市人民医院 | 一种轮椅用输送滑轨 |
CN108609550B (zh) * | 2018-07-19 | 2020-04-17 | 温州市人民医院 | 一种轮椅用输送滑轨 |
CN110733958A (zh) * | 2019-09-18 | 2020-01-31 | 浙江威特电梯有限公司 | 一种大吨位载货电梯 |
Also Published As
Publication number | Publication date |
---|---|
GB0510455D0 (en) | 2005-06-29 |
GB2426239B (en) | 2008-12-17 |
GB2426239A (en) | 2006-11-22 |
GB0608850D0 (en) | 2006-06-14 |
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